package lab02.test12;

/**
 * Created by JAVA on 2017/10/20.
 */
public class Shape {
    //属性
    //行为：求周长和面积
  //  void  area (){}
   double area (){
       return 0;
   }
    double perimeter(){
        return 0;
    }
    //构造函数
    Shape (){}
}
